52% (1985)

50% (1979)

54% (1976)

40% (1960)

55% (1975)

50% (1962)

70% (1963)

30% (1958)

57% (1934)

35% (1958)

0% (1976)

0% (1937)

45% (1955)

50% (1962)

0% (1975)

55% (1957)